From 79420f09e76e8e1dd1149d6ce9c20e06cbb5802a Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 10 Feb 2009 21:25:59 +0100 Subject: [PATCH] cfg80211: add more flexible BSS lookup Add a more flexible BSS lookup function so that mac80211 or other drivers can actually use this for getting the BSS to connect to. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- include/net/cfg80211.h | 12 +++++++++++- net/wireless/scan.c | 10 ++++++++-- 2 files changed, 19 insertions(+), 3 deletions(-) diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index f1d21570e6cb..c0d1f5b708c5 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -785,7 +785,17 @@ cfg80211_inform_bss_frame(struct wiphy *wiphy, struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy, struct ieee80211_channel *channel, const u8 *bssid, - const u8 *ssid, size_t ssid_len); + const u8 *ssid, size_t ssid_len, + u16 capa_mask, u16 capa_val); +static inline struct cfg80211_bss * +cfg80211_get_ibss(struct wiphy *wiphy, + struct ieee80211_channel *channel, + const u8 *ssid, size_t ssid_len) +{ + return cfg80211_get_bss(wiphy, channel, NULL, ssid, ssid_len, + WLAN_CAPABILITY_IBSS, WLAN_CAPABILITY_IBSS); +} + struct cfg80211_bss *cfg80211_get_mesh(struct wiphy *wiphy, struct ieee80211_channel *channel, const u8 *meshid, size_t meshidlen, diff --git a/net/wireless/scan.c b/net/wireless/scan.c index aacccc9ab6ca..b1893c863b97 100644 --- a/net/wireless/scan.c +++ b/net/wireless/scan.c @@ -116,9 +116,12 @@ static bool is_bss(struct cfg80211_bss *a, { const u8 *ssidie; - if (compare_ether_addr(a->bssid, bssid)) + if (bssid && compare_ether_addr(a->bssid, bssid)) return false; + if (!ssid) + return true; + ssidie = find_ie(WLAN_EID_SSID, a->information_elements, a->len_information_elements); @@ -199,7 +202,8 @@ static int cmp_bss(struct cfg80211_bss *a, struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy, struct ieee80211_channel *channel, const u8 *bssid, - const u8 *ssid, size_t ssid_len) + const u8 *ssid, size_t ssid_len, + u16 capa_mask, u16 capa_val) { struct cfg80211_registered_device *dev = wiphy_to_dev(wiphy); struct cfg80211_internal_bss *bss, *res = NULL; @@ -207,6 +211,8 @@ struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy, spin_lock_bh(&dev->bss_lock); list_for_each_entry(bss, &dev->bss_list, list) { + if ((bss->pub.capability & capa_mask) != capa_val) + continue; if (channel && bss->pub.channel != channel) continue; if (is_bss(&bss->pub, bssid, ssid, ssid_len)) {